The crazed Queens gunman who allegedly killed one man and wounded five in a drive-by rampage against red vehicles was in the throes of drug-induced delusions that he was being hunted by the Bloods street gang, sources said yesterday.

Matthew Colletta, 34, who was yesterday charged with murder, was high on a cocktail of vodka and cocaine Friday night when he allegedly started his six-hour shooting spree on seven SUVs, minivans and sedans. Five of the vehicles were red.

Five people were wounded and a Long Island man was killed just after he dropped his daughter off at college.

Colletta’s paranoid fantasies of his own personal gang war, started when he allegedly claimed his first victim at dusk Friday and began “terrorizing several Queens neighborhoods,” District Attorney Richard Brown said.

Sources told The Post that Colletta was in his car at 7:19 p.m. when he saw what he believed was 47-year-old Andrzej Leonik’s 3-year-old beige Boston terrier threatening a woman with a baby at 59th Place in Maspeth, authorities said.

Colletta, a burly bricklayer, allegedly admitted to cops he pulled his 9mm Ruger – which had been reported stolen in Virginia in 1996 – and tried to shoot the dog, but hit Leonik in the leg instead.

Leonik, from his bed at Elmhurst Hospital, scoffed at the idea that his tiny dog threatened anyone.

“That’s a lie,” he said.

Leonik said he saw Colletta driving up to him and rocking back and forth in his car.

“I think maybe he’s on drugs,” he said. “I turned my head to call the dog. That’s when he shot me.”

Colletta told authorities that Leonik was standing near a red car and that he imagined the Polish immigrant was a member of the Bloods street gang.

A valet who would not give his name said Colletta paid him $20 to park his car. But when he went to help a customer ahead of him, Colletta got antsy and pulled out in a huff.

“He seemed liked deranged,” the valet said. “I knew something was wrong with this dude. He didn’t want me to park his car after he paid me already.”

Colletta continued to cruise for victims behind the wheel of his green 1992 Cadillac SDS, authorities said.

He resumed his bloody rampage at 8:10 p.m. at 48th Avenue in Long Island City, taking aim at livery cabdriver Ghorta Sukhdan, they said.

Sukhdan, 33, said he pulled over on the west side of 48th Avenue to pick up a fare when he saw Colletta slowing down in the opposing lane of traffic. He said he assumed the man was going to ask for directions.

“He didn’t say anything,” Sukhdan said. “I didn’t see a gun, I just saw his hand. I said, ‘What is he doing?’ ” A shot broke through the driver’s side window and missed Sukhdan’s throat by mere inches.

At about 9:40 p.m., Colletta shot Khemnarine Udai in the left leg as he was standing in front of a restaurant at 114th Street and Liberty Avenue, cops said.

And about 40 minutes later, Colletta fired at a brother and sister’s car in Woodhaven as they looked for a parking spot, Brown said.

Glass rained down upon on the 22-year-old man and his 25-year-old sister, but they were unhurt.

As Colletta sped along the Whitestone Expressway in his paranoid frenzy, he began firing wildly at a red Dodge Caravan at 20th Avenue, authorities said.

Adesh Polwah, 23, in town for a couple of weeks to visit his girlfriend, was behind the wheel.

“We were hit 10 or 15 times,” he told The Post. “I didn’t know what was going on.”

Shards of glass hit Polwah and his passenger, Ramsampy Veerepen, as they tried to veer off the road.

“He just went off after we pulled aside.”

Miraculously, they were not hit by any bullets. The next victims weren’t so fortunate.

Todd Upton, 51, was heading home with his wife Mary, 49, after dropping off their daughter, Angela, at Marist College in Poughkeepsie. Colletta then allegedly started shooting at their new red minivan.

Upton, a UPS driver, was hit in the neck. He was taken to New York Hospital-Queens and died early yesterday.

Neighbors mourned him as devastated relatives gathered at Upton’s Massapequa Park home yesterday.

Kathy Tsoukatos described him as an avid sports fan who showered his three kids with attention.

“Why? Because he’s in the wrong place at the wrong time in the wrong car,” Tsoukatos said. “It makes no sense.”

When cops pulled him over at Park Lane South and 105th Street, they found Colletta sitting silently, his pistol resting on the passenger seat.

The Woodhaven native stared ahead without blinking as he was led from the 109th Precinct station house yesterday afternoon.

Sources say that trouble had been brewing in his life for years.

In 2000, Colletta spent six months on Rikers Island on drug charges. Last Sunday, he was arrested for menacing his ex-girlfriend, Philomena Zevlakis, in a screaming match that spilled out on to the street.

According to the criminal complaint, Colletta choked Zevlakis and chased her around the house with a hammer.

She declined to comment outside her home.

The DA requested that Colletta be held on a $1,000 bond on the menacing rap, but he was released without bail.

His behavior became more erratic recently and Noani Propst, 23, said that shortly before the shooting, he confronted her boyfriend because he parked his car in front of Colletta’s house.

She said Colletta kept repeating, “Do you think you make more money than me?”